One of my local Wal-Marts did a semi-reset (which, as is typical for WM, means cramming all the existing stuff closer together to make a small spot for a new line) and put out a whole shitpile of IM2 stuff. Most interesting was that there were figures from the second film, which I hadn't even seen photos of online. Then again, I wasn't really looking.
Anyway, the figures I saw were:
-Mark IV Armor (same general design as Mark III but a bit bulkier and a different chest piece)
-Mark V Armor (kind of a minimalist silver and red design with a rocket-firing suitcase)
-Mark VI Armor (the one with the triangular arc light chest piece)
-Mark VI Armor "Power Up" (press on his head and the torso lights up)
-War Machine (film version)
-Inferno Armor (Concept Series "Firefighter" armor)
I picked up Marks IV-VI (but not the light up version) and War Machine. They're nice figures, and I'm really impressed by the level of detail in this scale (as many have said, the Mark I outshines the 6" version from 2008 by a mile), but some of the joints have been either stiff or loose, particularly on the Mark IV's "waist" joint. Mine wobbles around like late 1970's Tony Stark on a bender. My only other complaint is that of about 26 figures on the shelves, 24 were some version of Iron Man, with only two villains (Dynamo and Monger). Oh well, I really hope that Hasbro doesn't make Scarlett Johannsen look like crap.